When light waves hit ice, most of them bounce off and radiate back into space. Because of this, it can be said that ice is a(n)

Physics

2 answers:

Softa [21]3 years ago

8 0

Reflective~~~~~~~~~~~~~~~~~~~~~~

kirill [66]3 years ago

8 0

Answer;

Reflective surface

Explanation;

Reflection is one of the property of a wave that occurs when a wave hits a boundary which is a reflective surface. The wave bounces off upon hitting the reflective boundary, such that the angle of incidence is equal to the angle of reflection.
Therefore, ice is an example of a reflective surface as light waves bounces off and radiate back when they hit the surface of the ice.

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Two wheels are identical but wheel b is spinning with twice the angular speed of wheel

Murljashka [212]

If two wheels are exactly the same but spin at different speeds, wheel b is twice te speed of wheel a, it is possible to find the ratio of the magnitude of radial acceleration at a singular point of the rim on wheel be to the spot is four.

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3 years ago

The half-life of caffeine is 5 hours. If you ingested a 30 oz Big Gulp, how many oz of caffeine is left after one half life? * Y

xeze [42]

Answer:

The amount of caffeine left after one half life of 5 hours is 15 oz.

Explanation:

Half life is the time taken for a radioactive substance to degenerate or decay to half of its original size.

The half life of caffeine is 5 hours. So ingesting a 30 oz, this would be reduced to half of its size after the first 5 hours.

So that:

After one half life of 5 hours, the value of caffeine that would be left is;

$\frac{30}{2}$ = 15 oz